Results The diagnostic accuracy of high frequency ultrasound was 81.6% (31/38), including 18 cases of meniscal tear, 7 cases of loose body and 6 cases of synovial lesions.

结果术前高频超声提示正确率为81。 6% （31 /38），其中包括半月板损伤18例、关节内游离体7例及滑膜病变6例。

youdao

The mechanical type chooses the tier utensil thanks to the rub , Cause easily the contact finger to wear and tear and has ariseed loose contact .

机械式选层器由于磨擦，轻易导致触头磨损而出现接触不良。

youdao